2345421801529 has 3 divisors (see below), whose sum is σ = 2345423333007. Its totient is φ = 2345420270052.

The previous prime is 2345421801523. The next prime is 2345421801553. The reversal of 2345421801529 is 9251081245432.

The square root of 2345421801529 is 1531477.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 635216970025 + 1710204831504 = 797005^2 + 1307748^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2345421801529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2345421801523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 765739 + ... + 2297215.

It is an arithmetic number, because the mean of its divisors is an integer number (781807777669).

Almost surely, 2^{2345421801529} is an apocalyptic number.

2345421801529 is the 1531477-th square number.

2345421801529 is the 765739-th centered octagonal number.

It is an amenable number.

2345421801529 is a deficient number, since it is larger than the sum of its proper divisors (1531478).

2345421801529 is an frugal number, since it uses more digits than its factorization.

2345421801529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3062954 (or 1531477 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 2345421801529 in words is "two trillion, three hundred forty-five billion, four hundred twenty-one million, eight hundred one thousand, five hundred twenty-nine".